The already sour relations between India and Pakistan have worsened over the past week as New Delhi piled blame on Islamabad for the Pulwama attack. Pakistan's leadership has strongly refuted the allegations.

Some 44 Indian paramilitary personnel were killed last week when an explosives-packed van rammed a convoy transporting 2,500 security forces in Pulwama, in the deadliest attack in Indian-occupied Kashmir in 30 years.